It was school time at Springfield elementary school and Miss Krabappel's class were all on laptops. Bart typed in "Lisa" in the box asking for a username and guessed her password. He was correct.
"Wow,Lisa's password is so predictable."exclaimed Bart. "All I had to do was type in "Ponies".Now to get up to some mischief Bart Simpson style."

"Miss Krabappel, Bart's talking to himself."Ralph announced to the whole class.

Everybody laughed and started chanting "Bart has gone weird.".

"Well,Bart,I hope you realize that's the first sign of madness. Ha!"sneered the teacher.

"Whatever." said Bart,shrugging.

"Now,class,when you log on,I want you to go on MAS Learning and revise what we have learned over the last few lessons."she addressed the class.

But Bart disobeyed. Instead,he logged in as Lisa on Facebook and updated her status with "Miss Hoover stinks" and various offensive comments about Springfield elementary school. Then he clicked on "My computer" on the start bar and viewed Lisa's files. He found a file labeled "My school work" and deleted the entire contents.

"Heh heh heh"laughed Bart,mischievously.

Over in Miss Hoover's class,Lisa was getting on quietly with her work when Miss Hoover unexpectedly said "Lisa,I thought you knew better than to not do school work."

"What are you talking about?"asked Lisa. "I've done everything you've ever told me to do."

"Then explain this."Miss Hoover demanded,turning her laptop round to show a empty folder.

"But,I put all my work in there. That's why I created the folder."said Lisa,puzzled.

"I thought you knew better than to lie,Lisa. I will see you in detention tonight."Miss Hoover announced.

Lisa scrunched up her work angrily and stormed out. While Lisa was gone,Miss Hoover visited Facebook to find to her displeasure,loads of offensive comments about her and the school. Miss Hoover charged like a bull out of the door, and confronted Lisa furiously.

"Right,not only have you not done your school work and lied,now I've found you've also posted offensive comments about me and the school on Facebook."she shouted.

"But I'd never do that. That's more like Bart."Lisa shouted back.

"ENOUGH WITH THE LIES!YOU KNOW WHAT,FORGET THE DETENTION BECAUSE YOU,YOUNG LADY ARE EXPELLED."Blasted Miss Hoover,unable to contain her anger.

"Bart,are you even doing what I set?"asked Miss Krabappel.

Bart quickly created a new tab and closed the Facebook one. He typed in MAS Learning before Miss Krabappel came over. Miss Krabappel approached him.

"Yes,I am,Miss. Look,see?Just plain old MAS Learning."said Bart.

"But you weren't before,were you,Bart?You were up to something."sneered Miss Krabappel.

"Hey,how do you know?"questioned Bart.

"Oh,come on. You must think I was born yesterday."said Miss Krabappel sarcastically. "If you were paying attention,you would know that tomorrow is Springfield Elementary's open evening. Now,as punishment for whatever you did,I want you to be a tour guide."

Over at the Simpson's house,Homer was sat on the couch drinking Beer,watching TV,ignoring Bart and Lisa,who were entering the house looking grim.

"Ha ha,Oh god,that's so funny. That monkey just mimicked me."Homer said out loud,at first not noticing Bart and Lisa. "Oh,hi Bart,hi Lisa. Boy,that monkey really knows how to impersonate me. And we haven't even met yet!"

"Hi,kids,how was school?"asked Marge,as Bart and Lisa both made their way into the kitchen.

Lisa ran over to her mum,tears falling rapidly down her face.

"Mum,I've just been expelled."she said,crying. "And the worst thing is,I didn't do anything."

"Now you just listen,young lady. Don't pretend you did nothing because they must have had a reason to expel you."declared Marge. "Now,go to your room and think about what you did."
"But I didn't do anything. My school work folder on the computers at school is empty and I don't know why. And someone's hacked into my Facebook account and posted offensive comments about school and Miss Hoover."

Bart left the room,feeling guilty for the problems he had caused.